Martin A. Beller (born July 10, 1967) is an American musician and songwriter.

He is the current drummer for They Might Be Giants since Dan Hickey's departure in 2004.

He has contributed writing and vocals for three of TMBG's albums: Here Come the ABCs (on "Alphabet Lost And Found"), Here Come the 123s (on "High Five!")

On TMBG's 2011 compilation album Album Raises New and Troubling Questions, Beller is referenced in the song "Marty Beller Mask", the lyrics of which suggest that he is actually Whitney Houston wearing a mask.

On the news of Houston's death, TMBG decided to phase the song out from public performance, before returning it in 2022.